From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Thu, 19 Dec 2019 14:57:46 +0800
Subject: net: hns3: add a log for getting chain failure in
 hns3_nic_uninit_vector_data()
Patch-mainline: v5.6-rc1
Git-commit: ff7dfcdd684b6277ed02c1025746a94cb1bfc397
References: bsc#1154353

Since the mapping can be overwritten, when fail to get
the chain between vector and ring, we should go on to
deal with the remaining options. For debugging, this
patch adds log info for this failure.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3608,7 +3608,12 @@ static void hns3_nic_uninit_vector_data(
 		if (!tqp_vector->rx_group.ring && !tqp_vector->tx_group.ring)
 			continue;
 
-		hns3_get_vector_ring_chain(tqp_vector, &vector_ring_chain);
+		/* Since the mapping can be overwritten, when fail to get the
+		 * chain between vector and ring, we should go on to deal with
+		 * the remaining options.
+		 */
+		if (hns3_get_vector_ring_chain(tqp_vector, &vector_ring_chain))
+			dev_warn(priv->dev, "failed to get ring chain\n");
 
 		h->ae_algo->ops->unmap_ring_from_vector(h,
 			tqp_vector->vector_irq, &vector_ring_chain);